Parma. I always called it (K) a wiggle Womp or mighty Womp. The only two 1/32 anglewinder steel (K&D) frames that Parma has made. The first one was also made in brass as their current I-32 is. The three locating pins had a stress breakage issue, but remove the pan and cut them up and make them into what you need just like the Womp and FCRs. The (K) Super Womp was new in the 1980(?) era and the Flexi Womp (D) came out in the 1990s along with the I-32. Steve at Parma should have exact info.